Now I am second guessing myself. Does the GTHD demo have the same menu UI as GT5p?
GTHD was out in November/December 2006, available as a free dl at PS3? launch.
The GT5P demo was released at the time of Tokyo car show 2007 - end of October, I think - roughly a month before the Japanese release of the game. Some of the drivable cars, 6 or 7 in total, were unveiled during the auto show (Impreza and GTR). The only available track - for races only - was Suzuka, making what the perfect definition of a
demo.
This is an old and maybe boring discussion but I find it hard to see GT's prologue games as demos: they have more cars than most full games out there, and differ in content to the next game in line.
GT4 Prologue had a proper content, focusing on licences - as many will remember - and many of its featured never made it to GT4. And though GT5 prologue was updated several times, GT5 will surely be a very different game. The time span between the release of the games - a year in the case of GT4P and GT4, about 2 this next generation's - also makes it hard to see the prologues as actual demonstration of games with new/updated engines and features.
As an example, after seing crash damage at the GC, how can you point someone GT5P's way when it doesn´t include any such thing?
I wouldn't be too surprised if we got a demo after TGS, something along the line of the GC demo.